2161466 has 8 divisors (see below), whose sum is σ = 3329940. Its totient is φ = 1051488.

The previous prime is 2161447. The next prime is 2161469. The reversal of 2161466 is 6641612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2088025 + 73441 = 1445^2 + 271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14531 + ... + 14678.

2^2161466 is an apocalyptic number.

2161466 is a deficient number, since it is larger than the sum of its proper divisors (1168474).

2161466 is a wasteful number, since it uses less digits than its factorization.

2161466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29248.

The product of its digits is 1728, while the sum is 26.

The square root of 2161466 is about 1470.1925044021. The cubic root of 2161466 is about 129.2953192444.

The spelling of 2161466 in words is "two million, one hundred sixty-one thousand, four hundred sixty-six".